Pneumatic connection technology
Couplings
Festo couplings allow tool-free disconnection and reconnection of compressed air lines without depressurising the installation. The range includes coupling sockets in series KD1 (M3), KD2 (M5/CK) and KD3/KD4 (1/8" to 1/2" BSP and CK push-in), plus push-in socket KDV-PK for coupling directly to standard tubing. Internal thread (-I) and external thread (-A) variants give flexible mounting options.
- 88 items
- 1 manufacturer
- Net prices plus VAT
Buying guide
How to choose Couplings
What matters when choosing: properties, comparison and typical applications.
Technical features
Coupling series type overview
| Series | Thread / push-in size | Version |
|---|---|---|
| KD1-M3-A | M3 | External thread |
| KD2-M5-A, KD2-M5-I | M5 | External and internal thread |
| KD2-CK-3, KD2-CK-4 | CK3, CK4 | CK push-in connection |
| KD3-1/8-A, KD3-1/8-A-R, KD3-1/8-I | G1/8 | External, internal, check-valve |
| KD3-1/4-A, KD3-1/4-I | G1/4 | External and internal thread |
| KD4-1/4-A, KD4-3/8-A, KD4-1/2-A | G1/4, G3/8, G1/2 | External thread |
| KD4-CK-6, KD4-CK-9, KD4-N-9 | CK6, CK9, N9 | CK and N push-in |
| KDV-PK-2, -PK-3, -PK-4 | PK2, PK3, PK4 | Push-in socket |
Typical applications
Typical applications: Tool changes on handling devices and robots, isolation points for maintenance zones (individual decommissioning without full system depressurisation), rapidly interchangeable test and inspection fixtures, and mobile compressed air consumers with quick-coupling connection to the supply line.